Question

Q. 16. (i) What is oxidation number ? Calculate oxidation number of Mn in KMnO4
and MnO4
(ü) What is salt bridge ? Write its two uses ?
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Answer 1

Answer:

oxidation numbers is the no. valency of an element satisfied by other atoms in the compound

7 is the oxidation numbers

salt bridge is used to maintain electrical neutrality and conduction to complete the circuit

Answer 2

Answer:

In KMnO4, it is +7 for Mn

and I think

Explanation:

Oxidation no is valency of element in a particular compound + its nature (electropositive/electronegative)

Eg NaCl = Na+ Cl-

Oxidation no. Of Na here is +1

And Cl is -1